Photon-neutron experiment performed in ZED-2

This paper presents results from a rod-drop experiment performed in the ZED-2 reactor. The lattice used for the experiment comprised 28-element CANDU-type assemblies arranged in a square array at a 28.575-cm spacing. Data were obtained for the relative flux (power) versus time following the rod drop up to 3000 seconds (50 min). An analysis of the data was performed using point kinetics calculations to yield flux (power) as a function of time and inverse point kinetics calculations to yield reactivity as a function of time. Two sets of calculations were performed, one set using the photo neutron data of Baumann and the other using the Bernstein data. Both sets of calculations employed the Blachot direct delayed neutron data. (author)